Roasted shelled melon seeds are a traditional food, belonging to the high-temperature roasting series. To address the serious pollution problem in production, the Tianyuanxing team has, after years of research and development, successively introduced: internal and external heating technology, high-temperature exhaust gas utilization, negative pressure roasting environment, centralized collection of shells and fibers, space feeding, pulse sedimentation comprehensive dust removal, and flat combustion technology.